Main Engine 4-Stroke · Main Engines (4-Stroke)
At its core, a medium-speed marine auxiliary diesel engine operates by converting fuel combustion into mechanical energy through a series of reciprocating piston movements within six cylinders. The Daihatsu 6LDC-32, part of the DC-32 family, boasts a bore and stroke pattern of 320mm and 400mm respectively, designed to achieve its rated power of 2206 kW at 720 RPM. This engine is capable of running on both Marine Diesel Oil (MDO) up to 700 mm²/s at 50°C and Heavy Fuel Oil (HFO), with preheating required for MDO use. Key maintenance points include regular checks on the fuel injection pump tappet adjustment screw, cooling water pump servicing, and careful assembly of intake and exhaust valves, especially given the critical tolerances involved in the valve assembly process.
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